Api Oil Water Separator Sizing

The spreadsheet operates on microsoft excel 2003 or later.

Api oil water separator sizing.

The name is derived from the fact that such separators are designed according to standards published by the american petroleum. 0 9860 density of the water s g g cm3 0 0052 viscosity in poise 1 2568 rise rate of oil droplet gpm ft2 calculated 159 13 horizontal surface area area ft2 of the separator needed to achieve desired oil removal performance 0 89 cross sectional velocity ft min. The information contained herein is the opinion of highland tank. 33 1 2 types of separator api tanks see figure 33 1 and plate separators are the more efficient oil separators.

This correlates to a tank size that can be 5 times the size of an equally sized coalescing separator. Oil droplets 150 microns in diameter and larger. See figure 5 33 and figure 5 34. Following are the definitions and categories of different oil droplet sizes as defined by the american petroleum institute in the mid 1970 s.

Oil water separators are typically the american petroleum institute api also called baffle type american petroleum institute 1990 or the coalescing plate cp type using a gravity mechanism for separation. This correlates to a tank size that can be 5 times the size of an equally sized coalescing separator. Oil water separator oil droplet sizes definitions and meanings. Oil droplets from 20 to 150 microns in diameter.

8 16 2016 5 28 46 pm. When sizing an ows there are three primary factors to consider. This design also known as an api separator generally provides a discharge oil concentration of 100 ppm based on a 150 micron droplet size. This calculation is based on the methods proposed.

Individual projects must be evaluated to determine the appropriate size and configuration for that site. Api tanks were originally designed by the american petroleum institute api for use in refinery applications but modifications of the design can be used for stormwater treatment. Below is a link to an api oil water separator sizing spreadsheet developed by hydro flo technologies. Oil water separator sizing calculation.

The api type design relies on a large water volume. Sizing ows calculation per api 421 xls author. This design also known as an api separator generally provides a discharge oil concentration of 100 ppm based on a 150 micron droplet size. Oil water separators typically consist of three bays.

Must be 3fpm note. Forebay separator section and the. By inputting the major design criteria you can solve for the separation chambers width to length to depth ratios. The api type design relies on a large water volume.